发明名称 |
Optical information processing apparatus |
摘要 |
An optical information processing apparatus uses an optical disk having correction marks such as mirror surfaces or wobbled pits intermittently arranged along a guide track. In a reproduce mode, tracking control is effected by correcting a tracking signal by a tracking offset component detected by the correction marks. In a record or erase mode, the track offset correction is deactivated and record or erase operation is controlled in accordance with an output level of the detected track offset component so that incomplete eraser of recorded data is prevented.
|
申请公布号 |
US4807210(A) |
申请公布日期 |
1989.02.21 |
申请号 |
US19870071183 |
申请日期 |
1987.07.08 |
申请人 |
HITACHI, LTD. |
发明人 |
KAKU, TOSHIMITSU;SHIGEMATSU, KAZUO;TSUNODA, YOSHITO;MAEDA, TAKESHI |
分类号 |
G11B7/00;G11B7/004;G11B7/0055;G11B7/09;G11B7/30;G11B11/105;G11B19/04;G11B27/19;G11B27/30;(IPC1-7):G11B7/00 |
主分类号 |
G11B7/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|